	@media screen and (min-width:1200px) {
	  html {
	    font-size: 20px;
	  }
	}

	@media screen and (min-width:800px) and (max-width:1200px) {
	  html {
	    font-size: 16px;
	  }
	}

	@media screen and (max-width:800px) {
	  html {
	    font-size: 12px;
	  }
	}

	* {
	  margin: 0;
	  padding: 0;
	  box-sizing: border-box;
	}

	html,
	body {
	  width: 100%;
	  height: cacl(100% - 4rem);
	  font-family: '楷体';
	  display: flex;
	  justify-content: center;
	}


	#main {
	  display: block;
	  margin-top: 4rem;
	}

	div {
	  width: 30rem;
	  height: 4rem;
	  display: flex;
	  justify-content: space-between;
	  align-items: center;
	  background-image: linear-gradient(#8f8f8f, #E3E3E3);
	  cursor: pointer;
	  color: blue;
	  transition: all .5s;
	  padding: 0 1rem;
	}

	div:hover {
	  opacity: .8;
	}

	div .icon {
	  font-size: 1.2rem;
	}

	p {
	  width: 30rem;
	  min-height: 10rem;
	  padding: 1.5rem;
	  border: 0.05rem solid darkgrey;
	}